Comparison Studies on Mechanical Properties, Microstructural Changes and Heat-Affected-Zone (HAZ) of Tig- And Laser Welded en AW 6082-T6

Comparison Studies on Mechanical Properties, Microstructural Changes and Heat-Affected-Zone (HAZ) of Tig- And Laser Welded en AW 6082-T6 | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Comparison Studies on Mechanical Properties, Microstructural Changes and Heat-Affected-Zone (HAZ) of Tig- And Laser Welded en AW 6082-T6 Elfi Rahayu Imam Fauzi, Mohd Najib Ali Mokhtar This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4621655/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract During fusion welding of aluminium alloy, the heat-affected zone (HAZ) reduces mechanical strength of component, particularly in 6000 series alloys, where the reduction can be 30%-50%. This softening phenomenon is not adequately addressed in current design standards such as Eurocode 9 and the British Standard Institution (BSI) Standard. In the present study, comprehensive experimental work is conducted to investigate the influence of welding methods and parameters on the occurrence of HAZ. Through experimental analysis of tungsten inert gas (TIG) and laser welding coupons, the severity and extension of HAZ were compared using tensile strength, hardness values and microstructure distribution. From this study, it is evident that tensile strength and hardness values of welded components significantly depended on heat input, welding speed, and welding method. The strength reduction in laser-welded components was inconsistent with that of TIG-welded components. However, the extent of HAZ was much narrower in laser-welded components than in TIG welding. In terms of microstructural analysis, the grain size was significantly increased after the welding processes. The orientation of the grain was found to be different for each welding method and was greatly influenced by the welding speed and temperature gradient of the weld pool. From this work, a comparison of mechanical properties and microstructural changes in TIG and laser-welded components can provide a basis to further improve the current design standards, particularly on the softening factor of welded joining. The results will significantly contribute to the enhancement of welding quality in the industrial joining practice. TIG laser welding aluminium alloy HAZ microstructural analysis Full Text Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-4621655","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":320385104,"identity":"24b0c653-89c1-40a7-bdad-10ef47e5579b","order_by":0,"name":"Elfi Rahayu Imam Fauzi","email":"","orcid":"","institution":"Universiti Sains Malaysia","correspondingAuthor":false,"prefix":"","firstName":"Elfi","middleName":"Rahayu Imam","lastName":"Fauzi","suffix":""},{"id":320385105,"identity":"1a904cb4-bb78-4cca-953d-672d502a4aab","order_by":1,"name":"Mohd Najib Ali Mokhtar","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA5UlEQVRIiWNgGAWjYHCChMMMDBY8/FAeYwORWiR4JBuYidfCAFQrwWBwgFgt5uwHHh4uqJGQMb6Rf/DRDQYb2Q0HuNMk8Gmx7ElIODzjmASP2Y1kZuMchjTjDQd4t+HVYnAAqIWHDayFTTqH4XAiYS3nHwC1/JPgMZ6RzP47h+E/EVpuAG3hbZPgMZBIZmPOYThAjBagLTP7JHgkzjw2ls4xSDaeeZh3swV+h+Ukfy74ZmPP35748HNOhZ1s3/HejTfwaWFg4ElANoEBFE0seB3GwMB+AEOI+QN+LaNgFIyCUTDCAAD4sUuNVxiMRAAAAABJRU5ErkJggg==","orcid":"https://orcid.org/0000-0003-4647-1230","institution":"Universiti Teknikal Malaysia - Main Campus: Universiti Teknikal Malaysia Melaka","correspondingAuthor":true,"prefix":"","firstName":"Mohd","middleName":"Najib Ali","lastName":"Mokhtar","suffix":""}],"badges":[],"createdAt":"2024-06-22 11:14:22","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-4621655/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-4621655/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":62057911,"identity":"c1c21107-a43f-4bc1-b1fc-c0a48ff63f73","added_by":"auto","created_at":"2024-08-08 20:31:49","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":1369927,"visible":true,"origin":"","legend":"","description":"","filename":"Submission1WeldingInTheWorld.pdf","url":"https://assets-eu.researchsquare.com/files/rs-4621655/v1_covered_f24a7484-5601-4926-acb5-c4b668564616.pdf"}],"financialInterests":"","formattedTitle":"\u003cp\u003eComparison Studies on Mechanical Properties, Microstructural Changes and Heat-Affected-Zone (HAZ) of Tig- And Laser Welded en AW 6082-T6\u003c/p\u003e","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":true,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true},"keywords":"TIG, laser welding, aluminium alloy, HAZ, microstructural analysis","lastPublishedDoi":"10.21203/rs.3.rs-4621655/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-4621655/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eDuring fusion welding of aluminium alloy, the heat-affected zone (HAZ) reduces mechanical strength of component, particularly in 6000 series alloys, where the reduction can be 30%-50%. 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